I've just installed MediaWiki 1.3.0beta6 and I don't have the MonoBook skin in my list of available skins in the user preferences.
The release file on Source Forge however says:
* New default layout 'MonoBook'
Oops ... just saw that it is disabled on PHP5 installations ... that would be me :)
Any ideas whether this might be fixed in the next release? The new skin is to die for ...
Thanks,